Javascript $this不是'；t在.each（）函数中的函数中工作

我有下面的代码，我相信$this没有在if语句中触发，因为它没有添加任何一个类。但是，如果我将其更改为只查找没有$this的类，它会添加两个类（因为我在页面上有两个优惠券，一个触发if，一个触发elseif）。我不确定如何在if语句中生成$this.find（）触发器

jQuery(document).ready(function($) {
    if ($('.clockdiv')[0]) {
        $('.couponWrap .coupons li').each(function() {
          // Set the date we're counting down to
          var deadlineYear = $(this).find("div .clockdiv .year").attr("rel");
          var deadlineMonth = $(this).find("div .clockdiv .month").attr("rel");
          var deadlineDay = $(this).find("div .clockdiv .days").attr("rel");
          var deadlineHour = $(this).find("div .clockdiv .hours").attr("rel");
          var deadlineMinute = $(this).find("div .clockdiv .minutes").attr("rel");
          var deadlineSecond = $(this).find("div .clockdiv .seconds").attr("rel");
          var couponExpired = $(this).find("div .clockdiv").attr("rel");

          var countDownDate = new Date(deadlineYear + "/" + deadlineMonth + "/" + deadlineDay + " " + deadlineHour + ":" + deadlineMinute + ":" + deadlineSecond).getTime();
          var startDate = new Date($(this).find("div .clockdiv .start").attr("rel"));

          // Update the count down every 1 second
          var x = setInterval(function() {

            // Get todays date and time
            var now = new Date().getTime();

            // Find the distance between now and the count down date
            var distance = countDownDate - now;

            // Time calculations for days, hours, minutes and seconds
            var days = Math.floor(distance / (1000 * 60 * 60 * 24));
            var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
            var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
            var seconds = Math.floor((distance % (1000 * 60)) / 1000);

            // Output the result in an element with id="demo"

            document.getElementById("days").innerHTML = days;
            document.getElementById("hours").innerHTML = hours;
            document.getElementById("minutes").innerHTML = minutes;
            document.getElementById("seconds").innerHTML= seconds;

            // If the count down is over, write some text 
            if (distance < 0) {
              clearInterval(x);
              document.getElementById("clockdiv").innerHTML = "<p>" + couponExpired + "</p>";
            }

            //Works but only for 1st start date
            //var testDate = $("div .clockdiv .start").attr("rel"); //2018/09/28 17:00:00

            var startDateNew = new Date(startDate);
            var startDateNewer = new Date(startDate);
            var newOldDate = new Date(startDateNewer.setDate(startDateNew.getDate() + 7));

            //alert(startDate + ", " +  startDateNew + ", " + startDateNewer + ", " + newOldDate);

            //This works fine
            var nowDateNew = new Date().getTime();

            //alert(nowDateNew - newOldDate.getTime());

            if (days <= 7) {
              $(this).find('div.couponDiv').addClass("old-coupon");
            } else if ((nowDateNew - newOldDate.getTime()) < 0) {
              $(this).find('div.couponDiv').addClass("new-coupon");
            }
          }, 1000);
        });
      }
});

jQuery（文档）.ready（函数（$）{
如果（$（'.clockdiv'）[0]）{
$（'.couponWrap.li'）。每个（函数（）{
//确定我们倒计时的日期
var deadlineYear=$（this.find（“div.clockdiv.year”）.attr（“rel”）；
var deadlineMonth=$（this.find（“div.clockdiv.month”）.attr（“rel”）；
var deadlineDay=$（this.find（“div.clockdiv.days”）.attr（“rel”）；
var deadlineHour=$（this.find（“div.clockdiv.hours”）.attr（“rel”）；
var deadlineMinute=$（this.find（“div.clockdiv.minutes”）.attr（“rel”）；
var deadlineSecond=$（this.find（“div.clockdiv.seconds”）.attr（“rel”）；
var couponExpired=$（this.find（“div.clockdiv”）.attr（“rel”）；
var countDownDate=新日期（deadlineYear+“/”+deadlineMonth+“/”+deadlineDay+“+deadlineHour+”：“+deadlineMinute+”：“+deadlineSecond）.getTime（）；
var startDate=新日期（$（this.find）（“div.clockdiv.start”）.attr（“rel”）；
//每1秒更新一次倒计时
var x=setInterval（函数（）{
//获取今天的日期和时间
var now=new Date（）.getTime（）；
//找出现在和倒计时日期之间的距离
var距离=倒计时日期-现在；
//天、小时、分钟和秒的时间计算
变量天数=数学楼层（距离/（1000*60*60*24））；
可变小时数=数学楼层（（距离%（1000*60*60*24））/（1000*60*60））；
var分钟=数学楼层（（距离%（1000*60*60））/（1000*60））；
var秒=数学楼层（（距离%（1000*60））/1000）；
//在id=“demo”的元素中输出结果
document.getElementById（“天”）.innerHTML=天；
document.getElementById（“小时”）.innerHTML=hours；
document.getElementById（“分钟”）.innerHTML=minutes；
document.getElementById（“秒”）.innerHTML=seconds；
//如果倒计时结束，写一些文字
如果（距离<0）{
净间隔（x）；
document.getElementById（“clockdiv”）.innerHTML=“”+couponExpired+”
”；
}
//有效，但仅适用于第一个开始日期
//var testDate=$（“div.clockdiv.start”）.attr（“rel”）；//2018/09/28 17:00:00
var startDateNew=新日期（startDate）；
var startDateNewer=新日期（startDate）；
var newOldDate=新日期（startDateNewer.setDate（startDateNew.getDate（）+7））；
//警报（startDate+”、“+startDateNew+”、“+startDateNewer+”、“+startDateNewer+”、“+newOldDate”）；
//这个很好用
var nowDateNew=new Date（）.getTime（）；
//警报（nowDateNew-newOldDate.getTime（））；
如果（天仅在函数外设置var，例如：

jQuery(document).ready(function($) {
    if ($('.clockdiv')[0]) {
        $('.couponWrap .coupons li').each(function() {
          // Set the date we're counting down to
          var deadlineYear = $(this).find("div .clockdiv .year").attr("rel");
          var deadlineMonth = $(this).find("div .clockdiv .month").attr("rel");
          var deadlineDay = $(this).find("div .clockdiv .days").attr("rel");
          var deadlineHour = $(this).find("div .clockdiv .hours").attr("rel");
          var deadlineMinute = $(this).find("div .clockdiv .minutes").attr("rel");
          var deadlineSecond = $(this).find("div .clockdiv .seconds").attr("rel");
          var couponExpired = $(this).find("div .clockdiv").attr("rel");

          var countDownDate = new Date(deadlineYear + "/" + deadlineMonth + "/" + deadlineDay + " " + deadlineHour + ":" + deadlineMinute + ":" + deadlineSecond).getTime();
          var startDate = new Date($(this).find("div .clockdiv .start").attr("rel"));

          // Update the count down every 1 second
var that = $(this);// out side the interval
          var x = setInterval(function() {

            // Get todays date and time
            var now = new Date().getTime();

            // Find the distance between now and the count down date
            var distance = countDownDate - now;

            // Time calculations for days, hours, minutes and seconds
            var days = Math.floor(distance / (1000 * 60 * 60 * 24));
            var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
            var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
            var seconds = Math.floor((distance % (1000 * 60)) / 1000);

            // Output the result in an element with id="demo"

            document.getElementById("days").innerHTML = days;
            document.getElementById("hours").innerHTML = hours;
            document.getElementById("minutes").innerHTML = minutes;
            document.getElementById("seconds").innerHTML= seconds;

            // If the count down is over, write some text 
            if (distance < 0) {
              clearInterval(x);
              document.getElementById("clockdiv").innerHTML = "<p>" + couponExpired + "</p>";
            }

            //Works but only for 1st start date
            //var testDate = $("div .clockdiv .start").attr("rel"); //2018/09/28 17:00:00

            var startDateNew = new Date(startDate);
            var startDateNewer = new Date(startDate);
            var newOldDate = new Date(startDateNewer.setDate(startDateNew.getDate() + 7));

            //alert(startDate + ", " +  startDateNew + ", " + startDateNewer + ", " + newOldDate);

            //This works fine
            var nowDateNew = new Date().getTime();

            //alert(nowDateNew - newOldDate.getTime());

            if (days <= 7) {
              that.find('div.couponDiv').addClass("old-coupon");
            } else if ((nowDateNew - newOldDate.getTime()) < 0) {
              that.find('div.couponDiv').addClass("new-coupon");
            }
          }, 1000);
        });
      }
});

jQuery（文档）.ready（函数（$）{
如果（$（'.clockdiv'）[0]）{
$（'.couponWrap.li'）。每个（函数（）{
//确定我们倒计时的日期
var deadlineYear=$（this.find（“div.clockdiv.year”）.attr（“rel”）；
var deadlineMonth=$（this.find（“div.clockdiv.month”）.attr（“rel”）；
var deadlineDay=$（this.find（“div.clockdiv.days”）.attr（“rel”）；
var deadlineHour=$（this.find（“div.clockdiv.hours”）.attr（“rel”）；
var deadlineMinute=$（this.find（“div.clockdiv.minutes”）.attr（“rel”）；
var deadlineSecond=$（this.find（“div.clockdiv.seconds”）.attr（“rel”）；
var couponExpired=$（this.find（“div.clockdiv”）.attr（“rel”）；
var countDownDate=新日期（deadlineYear+“/”+deadlineMonth+“/”+deadlineDay+“+deadlineHour+”：“+deadlineMinute+”：“+deadlineSecond）.getTime（）；
var startDate=新日期（$（this.find）（“div.clockdiv.start”）.attr（“rel”）；
//每1秒更新一次倒计时
var that=$（this）；//超出间隔
var x=setInterval（函数（）{
//获取今天的日期和时间
var now=new Date（）.getTime（）；
//找出现在和倒计时日期之间的距离
var距离=倒计时日期-现在；
//天、小时、分钟和秒的时间计算
变量天数=数学楼层（距离/（1000*60*60*24））；
可变小时数=数学楼层（（距离%（1000*60*60*24））/（1000*60*60））；
var分钟=数学楼层（（距离%（1000*60*60））/（1000*60））；
var秒=数学楼层（（距离%（1000*60））/1000）；
//在id=“demo”的元素中输出结果
document.getElementById（“天”）.innerHTML=天；
document.getElementById（“小时”）.innerHTML=hours；
document.getElementById（“分钟”）.innerHTML=minutes；
document.getElementById（“秒”）.innerHTML=seconds；
//如果倒计时结束，写一些文字
如果（距离<0）{
净间隔（x）；
document.getElementById（“clockdiv”）.innerHTML=“”+couponExpired+”
”；
}
//有效，但仅适用于第一个开始日期
//var testDate=$（“div.clockdiv.start”）.attr（“rel”）；//2018/09/28 17:00:00
var startDateNew=新日期（startDate）；
var startDateNewer=新日期（startDate）；
var newOldDate=新日期（startDateNewer.setDate（startDateNew.getDate（）+7））；
//警报（startDate+”、“+startDateNew+”、“+startDateNew
jQuery(document).ready(function($) {
    if ($('.clockdiv')[0]) {
        $('.couponWrap .coupons li').each(function() {
          // Set the date we're counting down to
          var deadlineYear = $(this).find("div .clockdiv .year").attr("rel");
          var deadlineMonth = $(this).find("div .clockdiv .month").attr("rel");
          var deadlineDay = $(this).find("div .clockdiv .days").attr("rel");
          var deadlineHour = $(this).find("div .clockdiv .hours").attr("rel");
          var deadlineMinute = $(this).find("div .clockdiv .minutes").attr("rel");
          var deadlineSecond = $(this).find("div .clockdiv .seconds").attr("rel");
          var couponExpired = $(this).find("div .clockdiv").attr("rel");

          var countDownDate = new Date(deadlineYear + "/" + deadlineMonth + "/" + deadlineDay + " " + deadlineHour + ":" + deadlineMinute + ":" + deadlineSecond).getTime();
          var startDate = new Date($(this).find("div .clockdiv .start").attr("rel"));

          // Update the count down every 1 second
var that = $(this);// out side the interval
          var x = setInterval(function() {

            // Get todays date and time
            var now = new Date().getTime();

            // Find the distance between now and the count down date
            var distance = countDownDate - now;

            // Time calculations for days, hours, minutes and seconds
            var days = Math.floor(distance / (1000 * 60 * 60 * 24));
            var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
            var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
            var seconds = Math.floor((distance % (1000 * 60)) / 1000);

            // Output the result in an element with id="demo"

            document.getElementById("days").innerHTML = days;
            document.getElementById("hours").innerHTML = hours;
            document.getElementById("minutes").innerHTML = minutes;
            document.getElementById("seconds").innerHTML= seconds;

            // If the count down is over, write some text 
            if (distance < 0) {
              clearInterval(x);
              document.getElementById("clockdiv").innerHTML = "<p>" + couponExpired + "</p>";
            }

            //Works but only for 1st start date
            //var testDate = $("div .clockdiv .start").attr("rel"); //2018/09/28 17:00:00

            var startDateNew = new Date(startDate);
            var startDateNewer = new Date(startDate);
            var newOldDate = new Date(startDateNewer.setDate(startDateNew.getDate() + 7));

            //alert(startDate + ", " +  startDateNew + ", " + startDateNewer + ", " + newOldDate);

            //This works fine
            var nowDateNew = new Date().getTime();

            //alert(nowDateNew - newOldDate.getTime());

            if (days <= 7) {
              that.find('div.couponDiv').addClass("old-coupon");
            } else if ((nowDateNew - newOldDate.getTime()) < 0) {
              that.find('div.couponDiv').addClass("new-coupon");
            }
          }, 1000);
        });
      }
});